Senior Windows Linux Systems Engineer jobs

Manassas, Virginia

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Today

Lead Solution ArchitectLocation: McLean, VADepartment: [e.g., IT / Engineering / Infrastructure]Security Clearance: Secret, TS/SCI requiredReports To: Program MangerAbout the RoleDell Federal is seeking a visionary Lead Solution Architect to spearhead the design, integration, and deployment of our next-generation, on-premise private cloud ecosystem. In this highly visible leadership role, you will be the technical authority responsible for harmonizing multiple disparate technology families?inclu

Full-time

Federal Lead Systems Architect

Virginia

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Today

Full-time

Senior DevSecOps Engineer

Colorado Springs, Colorado

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Today

Job Description WHAT WE'RE DOING Come join the CommandIQ (CIQ) team - a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user's needs. Customers can also easily integrate their favorite tools into a single Command

Full-time

USD 97,100.00 - 171,235.00 per year

Senior/ Lead Python Engineer with Bazel experience

Remote or Texas

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Today

We are currently hiring a Senior / Lead Python Engineer for a remote role in the US. Essential functions Work on an established infrastructure codebase used to manage Python builds and dependencies at scaleModify and extend build logic to support new platforms, environments, and workflowsResolve dependency and integration issues in complex build pipelinesImprove cross platform consistency of build and packaging workflowsCollaborate with platform and infrastructure teams to validate changes and e

Full-time

Senior Software Engineer (C++), Intelligence Systems

Reston, Virginia

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Today

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c

Full-time

USD 166,000.00 - 220,000.00 per year

Senior System Administrator - Field Operations Support (Onsite)

Vancouver, Washington

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Yesterday

Senior System Administrator Field Operations Support (Onsite) Our client, a leading Pacific Northwest utility provider committed to public service and environmental preservation, is looking for a Senior System Administrator for their Vancouver, Washington location. In this role, you will provide hardware maintenance lifecycle support for the Control Center systems. You will also provide General Support System (GSS) infrastructure maintenance, troubleshooting, repair, emergency response, client

Contract

Senior Network Engineer

Belcamp, Maryland

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Today

Job Number: R0243879 Network Engineer, Senior The Opportunity: A well-designed network is critical to move data and enable DoD Organizations to achieve their missions, but how can an organization make sure their network will fit their current and evolving needs? Crafting the right network, with the right equipment and software, requires a combination of technical skill and careful planning. That's why we need you, an experienced network engineer who knows how to develop the exact network DoD ne

Full-time

USD 77,600.00 - 176,000.00 per year

Senior Cyber Security Analyst

Denver, Colorado

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Today

MANTECH seeks a mission-focused and detail-driven Senior Cyber Security Analyst to join our team in Aurora, CO. The Senior Cyber Security Analyst will leverage their strong technical background and knowledge to support critical cybersecurity operations, monitoring and analyzing activity across systems to identify and respond to threats. This opportunity is ideal for someone who thrives in a dynamic, fast-paced environment and is passionate about protecting digital infrastructure. Responsibilit

Full-time

Senior Cloud Cyber Security Engineer

Bethesda, Maryland

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Today

Leidos has an exciting opening for you, our next Senior Cloud Cybersecurity Engineer, to play a critical role in the accreditation and operation of a state-of-the-art technology stack under the DOMEX Technology Platform (DTP) where we support our client's mission to centralize and standardize Tasking, Collection, Processing, Exploitation and Dissemination (TCPED) of Open Source Intelligence (OSINT) across the Defense and Intelligence Community enterprises. We leverage cloud-based computing, arti

Full-time

USD 131,300.00 - 237,350.00 per year

Systems Administrator III - Deply Only

Shalimar, Florida

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Today

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Systems Administrator , you will oversee the administration of complex systems, ensuring their robustness and reliability within the Aerospace and Defense sector. You will lead the development and implementation of system enhancements, manage security protocols, and provide expert-level troubleshooting. This role involves close collaboration with various IT teams to support mission-critical syste

Full-time

Senior Engineer - Red Team Operator

Brooklyn Park, Minnesota

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Today

The pay range is $98,000.00 - $176,000.00 Pay is based on several factors which vary based on position. These include labor markets and in some instances may include education, work experience and certifications. In addition to your pay, Target cares about and invests in you as a team member, so that you can take care of yourself and your family. Target offers eligible team members and their dependents comprehensive health benefits and programs, which may include medical, vision, dental, life i

Full-time

USD 98,000.00 - 176,000.00 per year

Senior Site Reliability Engineer

Coppell, Texas

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8d ago

Senior Site Reliability Engineer combination of deep operational expertise and hands-on engineering ability. The majority of your time (~70%) will be focused on owning the reliability, availability, scalability, and operational excellence of the cloud infrastructure and SaaS platforms powering our business. The remaining ~30% puts you directly in the platform engineering flow: building automation, improving deployment pipelines, and driving reliability initiatives from conception through produc

Easy Apply

Full-time

Depends on Experience

Senior Reverse Engineer / CNO Developer

Laurel, Maryland

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Today

An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if you currently do not possess this level of clearance. Are you a Senior Reverse Engineer / CNO Developer who is ready for a new challenge that will launch your career to the next level? Tired of being treated like a company drone?Tired of promised adventures during the hiring phase, then dropped off on a remote contract and never seen or heard from the mothership again?Our engineers were certa

Full-time

USD 200,000.00 - 280,000.00 per year

Senior Systems Administrator

Chantilly, Virginia

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Today

MANTECH seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA. As a Senior Systems Administrator you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities, as well as coordinating and/or supervising a team of System Administrators. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensurin

Full-time

Senior Apple Platform Engineer

Quantico, Virginia

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Today

Job ID: 2613226 Location: Quantico, VA, US Date Posted: 2026-06-02 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: Top_Secret Clearance Level Must Be Able to Obtain: TS/SCI Potential for Remote Work: ORA_ON_SITE Description SAIC is seeking a Sr. Apple Platform Engineer to support our DCSA/OneIT program out of Quantico, VA. Introduction Make a difference for national security

Full-time

USD 160,001.00 - 200,000.00 per year

Systems Administrator Senior

Colorado Springs, Colorado

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Today

Modern Technology Solutions, Inc. (MTSI) is searching for a Systems Administrator - Senior to support United States Space Force (USSF) by developing software in support of Space Systems Command (SSC) Defensive Cyber Operations rapid agile development of defensive cyber solutions to protect, defend, and respond to both ground and space based cyber adversarial threats. A successful candidate should be a leader and problem solver with a proven ability to deliver superior results as part of a high p

Full-time

USD 135,000.00 - 165,000.00 per year

Software / CNO Developer (Senior Software Developer; Systems Software)

Columbia, Maryland

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Today

Active TS/SCI + Polygraph C/C++, Python experience Assembly experience (any platform/processor) Qualifications - Degree from an accredited college or university in System Engineering or related discipline and one of the following: - 10+ years of experience with a Master's degree - 12+ years of experience with a Bachelor's degree - 16+ years of experience with Associate's Degree or HS Diploma Desired: Software Development, Reverse Engineering, Vulnerability Analysis Cyber Security, AI/ML, cloud

Full-time

Computer Network Architect /Lead Cyber Range Architect

Franklin, Indiana

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Today

Required Experience: - Minimum 7yrs experience as Cyber SME/Cyber Architect position or similar experience with minimum 3yr of experience in the configuration and operation of cyber range or computer test bed environments. - Expert knowledge in designing and configuring computer networks including routing, switching, firewalls, DNS, active directory, VPNs, VLANs, SANs utilizing bare metal and virtualized systems. - Demonstrated experience with automation, provisioning, imaging, orchestration, a

Full-time

Senior Systems Administrator (Australia) - TS/SCI with Polygraph

Hayward, California

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Active Directory (AD), Linux, Microsoft Windows, Operating Systems (OS) Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is

Full-time

USD 100,175.00 - 135,530.00 per year

Senior Site Reliability Engineer

Olathe, Kansas

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Today

Overview We are seeking a full-time Senior Site Reliability Engineer at Garmin's U.S. headquarters in the Greater Kansas City area. In this role, you will be responsible for ensuring the integrity of Garmin's production environment is maintained and that all releases into the environment are well-organized, communicated, and managed. Essential Functions Coordinate and oversee basic to complex releases into Garmin's production environment including coordination and oversight of the production en

Full-time

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Senior Windows Linux Systems Engineer jobs